The way its being reported in the States appears in fact to be fairly low key.
This from Engadget appears to be fairly typical:
"which confirmed that a small number of early handsets shipped with faulty software that caused memory management issues and eventually data connectivity woes. It insists this problem is now fixed, and that come April 16th, all affected consumers may swap their device at any AT&T store or merely download the update."
However, Nokia are indeed showing an unusual turn of speed on this one, their response being that anyone who has already bought it or buys before the 16th gets it, to all intents and purposes, free on contract. If it is the case that the number of customers actually effected is low then this may in fact do Nokia no harm. Indeed it may even do them some good. We have after all seen enough examples in recent times of companies at first denying that there is any problem and then when forced to admit to its existence, being very grudging about rectifying the situation. Nokia's fleetness of foot on this occasion may in fact turn the situation into positive publicity for them.